They give off similar vibes. They're both cute ,fluffy, sincere dramas where the main lead is in a band and the other main lead is very supportive. They both also have great sound tracks.

These shows have similar vibes and depict a strong connection and love between the male lead and feamle that leaves you wanting more. Son Oh Gong (A Korean Odyssey) and Dongfang Qing Cang (Love Between Fairy and Devil) are both badass male leads who are the strongest in their respective world. They can be cold/ nonchalant in their attitudes and are both bond to the female leads which initially is the reason why they can't killl them. Slight spoiler.... Both male leads develop a weakness because of their love for the female lead, but this weakness might just turn out to be a strength, and although the female leads in those shows aren't the most powerful, they are both considered unique in their own way and would do whatever they can to protect their male lead.